Rake or blow the leaves into long strips on the driveway, (the strips can be up to 2 ft deep) and mow over them with your mower. The pile will reduce in volume about 10-fold and you can blow the mulch back onto the landscape beds or around trees & shrubs.
The one “problem” area in your landscape may be your perennial beds including any ground cover areas. Whole fallen leaves can be heavy and damp (especially oak and sycamore) and may create bad air flow and drainage, leading to risk of perennial crown rot in some species. Carefully pull, vacuum, or blow off the leaves from the beds, then shred and apply the fluffy mulch directly back onto the same beds.
To see just how great natural leaf mulch can look, check out this Fine Gardening video of gardener Sydney Eddison showing how she uses shredded leaves to mulch her perennial beds.